Question

Erica is competing in the shot put event at a track meet. She hurls a shot with a mass of 4 kilograms at a speed of 9 meters/second. The shot’s kinetic energy is how many
joules.

Answer 1

Required Question :-

Erica is competing in the shot put event at a track meet. She hurls a shot with a mass of 4 kilograms at a speed of 9 meters/second. The shot’s kinetic energy is how many joules.

Given :-

• The formula of kinetic energy = 1/2 × mv^2
• Mass = 4 kilograms
• Velocity = 9 m/s

To find :-

• Here, we have to find the kinetic energy

Solution :-

Here, we have the formula

kinetic energy= 1/2 × mv^2

So, m is a mass of object and v is a speed of object,

Simply, put the values in given formula , we get

Kinetic energy = 1/2 × 4 × 9^2

=> 1 /2 × 4 × 81

=> 81 × 2

=> 162 J

Answer :- The kinetic energy is 162 Joules.

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